Selection of Bus-bar Heat Shrink Tube

Bus-bar heat shrink tube is a kind of tubular protective sleeve that can shrink after heating. It is a special polyolefin material heat shrink tube, which can also be called PE bus-bar heat shrink tube. The bus-bar is the main power supply line of the distribution power supply device (copper bar and aluminum bar are called the bus-bar), and each branch line (branch bar) is led up and down by the bus bar. That is, in the power supply system, the copper bar or aluminum bar connecting the main switch in the electric cabinet and the switch in the branch circuit has insulation treatment on its surface. 

The main function of the bus-bar heat shrink tube is to put an end to the short circuit fault caused by mice, snakes and other small animals, prevent acid, alkali, salt and other chemicals from corrosion of the bus-bar, prevent maintenance personnel from entering the charged gap and causing accidental injury, adapt to the development trend of miniaturization of switchgear, and solve the insulation problem of the busbar groove.

After the heat shrink, the surface of the heat shrink tube of the bus-bar should be clean and smooth, and the shrinkage should be uniform. The surface of the heat shrink tube of the bus-bar should be free from scorching, fading, bubbles, cracking, wrinkling, and scratching. At this time, if it is closed on the copper-aluminum bus-bar with sharp burrs on the surface, the heat shrink tube will be scratched, which will cause the heat shrink tube to crack immediately or crack after running for a period of time. 

Therefore, before contraction, it is necessary to check whether the copper and aluminum busbar has burrs and treat it accordingly to smooth the surface of the copper and aluminum busbar. Before using the continuous bushing heat shrink tube. The casing should be cut according to the quantity required, and the cut must be smooth and not zigzag.